CVE-2021-31999
High
Description
A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.
SeverityHigh
CVSS8.8
Exploit probability—
ProductRancher
PublishedJul 15, 2021
First seenJul 15, 2021
Weakness typeCWE-807CWE-807
How to fix
Update
- rancher rancher2.4.16, 2.5.9 or later
- github.com/rancher/rancher2.4.16, 2.5.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rancher rancher | v < 2.4.16, 2.5.0 ≤ v < 2.5.9 | 2.4.16, 2.5.9 |
| github.com/rancher/rancherGo | 2.0.0 ≤ v < 2.4.16, 2.5.0 ≤ v < 2.5.9, 2.0.0+incompatible ≤ v | 2.4.16, 2.5.9 |
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